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WorksheetsVariables in Scientific Experiments
Total questions: 26
Worksheet time: 2hrs 46mins
In an experiment, the constant, or control, is...
Something that changes.
What you are measuring.
Something that does not change.
Your conclusion.
In your experiment, the factor you measure is called...
independent variable
dependent variable
control
rule
In an experiment, the factor that is changed is called...
independent variable
dependent variable
control
spam
In this same experiment by Steve to find out which type of fertilizer would make his sunflowers grow more, what would be the dependent variable?
Type of fertilizer
Size of the sunflower
Type of sunflower
An experiment is conducted on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, and Gatorade. Each plant has the same amount of sunlight, soil, and listens to the same music. What is the independent variable?
the type of plant
the type of liquid
the type of music
the amount of liquid
True or False: An experiment can have more than one control.
True
False
Squidward found new reeds to try on his clarinet. He used an APPLAUSE METER to measure the applause after playing Under the Sea with each reed. The results were put in the table.
What was the independent variable?
The Song
The Reed
The Applause
Scientific questions have to be...
Measurable
Easy
Interesting
Choose the best-written hypothesis that answers the question:
Question: Why is my room hotter during the day than at night?
The sunlight is making my room hotter.
Mr. Rivas has the heating on in the morning.
If I close my blinds during the day, then my room will be cooler because the sunlight cannot enter.
Sunlight actually cools a room.
The variable in an investigation that you are measuring is the _________________?
control variable
independent variable
dependent variable
research variable
Angelina set up an experiment to see how the mass of a ball affects the distance it rolls from a ramp. Identify the independent variable.
Distance traveled by the ball
Height of the ramp
Mass of the ball
Who set up the experiment (Mrs. S, etc)
Marcos wants to know: Does the type of gasoline put in a car affect the speed at which the car can drive? What is the independent variable?
Type of gasoline
Which car the gasoline is put into
How fast the car can drive
How much gasoline is put into the car
Ramone wants to know: Does the distance a person kicks a soccer ball affect how well they do on their math exam? What is the dependent variable?
How far they kick the soccer ball
Who the person is
How well they do on the math exam
Type of soccer ball
What is a control group?
The variable that is changed/manipulated in the experiment
The variable that is observed/measured in the experiment
Elements that are kept constant/unchanged in the experiment
The group that does not receive the manipulation; used for comparison
The groups that do receive the manipulation
Scientific Question: Does the type of shoe you wear affect the speed at which you can run?
What is the independent variable?
type of shoe
how fast you run
person
Scientific question: Does the type of shoe you wear affect the speed at which you can run?
What is the dependent variable?
type of shoe
how fast you run
person
Why is it important to have only one independent variable and control the other variables when conducting scientific experiments?
To be able to determine which factor is causing the change in the experiment.
It doesn't matter, you can have as many independent variables as you want.
Mrs. Ahlers organized an experiment to see how the mass of a ball affects the distance it rolls from a ramp. What is the dependent variable?
Distance traveled by the ball
Height of the ramp
Mass of the ball
Where the experiment was conducted.
Another definition of hypothesis is
independent variable
dependent variable
an educated guess
control variable
Question #7: One plant receives sunlight for 12 hours a day. Another plant does not receive sunlight. After 3 weeks, we compare how green each plant looks. What is the independent variable?
Amount of sunlight
How green the plant is
Type of soil
Question #7: One plant receives sunlight for 12 hours a day. Another plant does not receive sunlight. After 3 weeks, we compare how green each plant looks. What is the dependent variable?
Amount of sunlight
Type of soil
How green each plant is
Which of the following hypotheses is written correctly?
If I freeze a tennis ball, then it will not bounce as high.
If a tennis ball is frozen, it will not bounce as high as one that is not.
Frozen tennis balls will not bounce as high.
If I heat a tennis ball, it will bounce high.
A student was conducting an experiment using the scientific method. Every three days the student plans to count the green leaves. What would be a good hypothesis for this experiment?
If the plants are placed in direct sunlight, then they will grow more green leaves.
If the plants are placed in bright light, then they will grow more green leaves than in dim light.
If the plants are placed in clay pots, then they will grow more green leaves than in plastic pots.
If the plants are in warmer temperatures, then they will grow more green leaves.
According to the diagram, what question is being tested?
How does the color of light affect plant growth?
How does the amount of fertilizer added to plants affect growth?
How will different amounts of water affect plant growth?
How does the type of soil affect plant growth?
Mr. S. organizes an experiment to see how the mass of a ball affects the distance it rolls from a ramp. Identify the constant.
distance traveled by the ball
height of the ramp
mass of the ball
weight of the ball
Which of the following is a control/constant variable in this experiment?
The color of the light
The type of plant
